50+ faits sur les animaux qui vous stupéfieront (mais qui ne seront pas dans l'examen)

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Transcript

00:00:00 The biggest eyes of the animal kingdom belong to the colossal calamar.

00:00:04 This creature probably has the largest pair of eyes that has ever existed on our planet.

00:00:10 They can reach an astonishing diameter of 27 cm,

00:00:14 or the size of a basketball.

00:00:17 The colossal calamar needs such eyes not only to see its prey better,

00:00:21 but also to protect itself from underwater predators.

00:00:24 Its eyes are oriented forward, which gives it a binocular vision.

00:00:29 Not to be confused with the giant calamar, which has its eyes placed on each side of its head,

00:00:34 which also allows it to see predators.

00:00:37 But as it does not have a binocular vision, it is not very good at evaluating distances.

00:00:42 The colossal calamar, like many other species of calamar,

00:00:46 has photopores, or luminous organs, one in each eye globe.

00:00:51 Are they like the headlights of a car?

00:00:53 These luminous organs are made up of vertical lines, located at the back of the eye globes.

00:01:00 Despite this rather nice feature, it is unlikely that it has the vision of colors,

00:01:05 like most animals of the deep sea.

00:01:07 Indeed, in the depths of the ocean, where it is very dark, they do not really need it.

00:01:14 Humans, for example, have eyes that can detect light up to a depth of about 500-600 meters, no more.

00:01:22 As the colossal calamars live more than 1000 meters below the surface,

00:01:26 they had to adapt to be able to see in almost total darkness.

00:01:32 That is why they have very large pupils, about 8 cm in diameter.

00:01:37 This allows them to capture each particle of light in these hostile environments.

00:01:42 Large eyes are not necessarily synonymous with large bodies, just ask the question to the Tarsier.

00:01:48 It is a group of primates that has the largest eyes in relation to their size.

00:01:52 Each of their eyes is as large as their brain.

00:01:55 These animals are found in the air of Golum in Southeast Asia.

00:01:59 Because of the size of their eyes, these small animals are not able to make them pivot completely,

00:02:05 and therefore use their neck to widen their field of vision.

00:02:09 Like ibus, their neck can pivot by about 100K / 20 degrees on each side.

00:02:15 Tarsiers are nocturnal animals and use their bizarre eyes to search for their prey.

00:02:19 They don't make much effort, besides that, they just wait for the prey to approach them,

00:02:24 sitting patiently in the dark.

00:02:27 Speaking of small but effective eyes, some types of ibus have about 28,000 lenses,

00:02:34 more than any other living animal.

00:02:37 And as their eyes cover almost all of their head, they have a 360-degree vision.

00:02:43 But can an animal survive without eyelids?

00:02:46 Most living beings evolved to have eyelids to protect their eyes from dirt.

00:02:51 Eyelids also help us in very bright environments or when we are exposed to a strong heat.

00:02:57 Finally, eyelids contribute to the lubrication of the eyes so that they do not dry out and do not lose their function.

00:03:05 Nocturnal geckos do not have eyelids, but they have found another unique method.

00:03:11 They count on their tongue to keep their eyes lubricated and clean.

00:03:15 They also see very well in the dark because, at night,

00:03:20 their vision is 350 times more sensitive to color than ours.

00:03:25 I must admit that I would like to have eyes that change color from time to time.

00:03:29 Unfortunately for me, I was not born in the Arctic.

00:03:33 Their eyes can change color depending on the season.

00:03:36 In summer, for example, their eyes turn golden, while during the coldest months, they have blue eyes.

00:03:42 The eyes of these animals have adapted and acquired this flexibility

00:03:47 due to the constant variations in brightness in their hostile habitats.

00:03:51 Have you ever heard of a four-eyed fish?

00:03:54 Its official name is "Lanableps" or "four-eyed with large scales".

00:03:59 It has the ability to see underwater and on water, simultaneously.

00:04:02 How is this possible? Because its eyes are divided in two by a horizontal line.

00:04:07 Each of these two eyes has its own pupil and its own retina,

00:04:11 which means they can act separately.

00:04:14 This unique arrangement of its eyes allows fish to see its predators in the sky

00:04:18 and to spot insects on the ground, which is the essence of its menu.

00:04:23 The eyes of ostriches are larger than their brains.

00:04:27 Of all terrestrial animals, they have the largest eyes,

00:04:31 since they measure about 5 cm in diameter.

00:04:34 But if you look closely, you will also see that the eyes of ostriches are endowed with long, dense eyelashes.

00:04:40 These are not really eyelashes, because they are not made of hair.

00:04:44 These long wicks look more like feathers

00:04:47 and allow these huge birds to protect themselves against the flying sand and against the light of the sun.

00:04:53 Chameleons are among the most beautiful eyes in the world.

00:04:57 They have the ability to move independently from each other,

00:05:00 which allows these reptiles to have a 360-degree vision.

00:05:05 This reptile can use monocular vision,

00:05:08 that is, when the two eyes work separately,

00:05:11 and binocular vision, when the two eyes focus on the same thing.

00:05:15 We could say that the purple bear has a giant eye.

00:05:19 Indeed, the entire surface of its body is filled with photoreceptors

00:05:23 that make it sensitive to light and allow it to see in all directions.

00:05:28 From time to time, it needs to direct the light to see better.

00:05:32 The creature uses its thorns to prevent some of the light from reaching its body.

00:05:39 Some eyes of the animal kingdom have had to adapt to very hot climates,

00:05:44 as is the case with camels, for example.

00:05:47 These animals have very long eyelashes that help them protect themselves from the sand.

00:05:52 The camel's eye also has a third eyelid,

00:05:55 which extends from one corner of the eye to the other.

00:05:58 As their environment is filled with small particles of dust,

00:06:02 they must clean their eyes more frequently than other species.

00:06:07 Like all other predators,

00:06:10 ibus have a common characteristic with humans, they can see in 3D.

00:06:14 Ibus need it to better calculate the distance that separates them from their prey.

00:06:19 But a question arises.

00:06:21 How do these gigantic eyes fit into the small skull of an ibus?

00:06:25 It turns out that these birds had to "redraw" the shape of their eyes.

00:06:30 The eye of an ibus is not a sphere, it is more elongated.

00:06:34 The bones of the bird's skull have a special structure composed of sclerotic rings.

00:06:39 This structure helps to support these huge eyes and keep them in place.

00:06:43 It is because of these rings that ibus cannot make their eyes rotate

00:06:47 and always look straight ahead of them.

00:06:50 They must therefore use their neck to see around them.

00:06:54 The ibus probably has the most complex eyes in all of the animal kingdom.

00:06:59 We humans only have three types of cones in our eyes,

00:07:03 which allows us to see the colors from red to purple.

00:07:06 The ibus has 16 types of cones.

00:07:09 It may not see different colors from ours,

00:07:12 but it has one of the best color recognition systems ever.

00:07:16 These ultra-sophisticated color receivers allow them to react very quickly

00:07:20 to each small change in color, which allows them to avoid predators.

00:07:25 When you think of animals whose pupils are really unique,

00:07:28 sheep and goats are not the first on your list, are they?

00:07:32 You are wrong.

00:07:33 The goat's pupils do indeed have the shape of a horizontal line,

00:07:37 which is not without utility.

00:07:40 The data provided by researchers indicate that the shape of the pupils

00:07:44 and the orientation of the eyes are linked to the daily activities of each type of animal.

00:07:49 Take the example of large deer predators, like wolves.

00:07:52 Most of them have their eyes turned forward and their pupils round.

00:07:57 On the other hand, smaller animals, like snakes, cats or foxes,

00:08:01 which go to get their daily and night food,

00:08:04 have vertical-slanted pupils, better adapted to night vision.

00:08:08 More vulnerable animals, like horses and deers,

00:08:11 must be constantly on guard.

00:08:13 They have therefore adapted to have horizontal, large and narrow pupils.

00:08:18 This allows them to extend their field of vision,

00:08:20 which is wider than that of any other animal.

00:08:23 In addition, when they keep their heads down, their eyes turn,

00:08:26 which allows them to monitor their environment.

00:08:29 It turns out that the starfish do not have a head.

00:08:32 They are the head.

00:08:34 When you look at a starfish, you probably think it has only five arms.

00:08:38 Scientists have always been curious to know why starfish looked like this,

00:08:42 especially where their heads were really.

00:08:44 Most creatures, including us, have bilaterally symmetrical bodies.

00:08:49 This means that you can sink them in the middle and get two sides that correspond.

00:08:53 But starfish, as well as flat urchins and sea anemones, are different.

00:08:58 They have a radial symmetry,

00:09:01 which means that their bodies have identical parts but distributed from the center.

00:09:06 Starfish or starfish are special because of this symmetry with five branches,

00:09:12 and can be divided into five equal parts.

00:09:15 To make this discovery, scientists used a technique called ARN tomography,

00:09:21 which helps study genes.

00:09:23 They focused on those that determined the outer layer, including the nervous system.

00:09:28 Surprisingly, the associated genes were active in the starfish's head as well as in its arms.

00:09:34 However, the genes related to the trunk were barely active.

00:09:38 This suggests that starfish have a unique separation between their heads and their bodies.

00:09:43 The study raised new questions about the evolution of these creatures

00:09:47 and what their ancestors with trunks could have looked like, based on their fossils.

00:09:52 It also showed that the active genes in the nervous system of an antheropneust

00:09:57 were also active in the skin of the starfish, covering its entire body.

00:10:02 These genes are the most active in the center of each arm,

00:10:05 changing to the extremity to be more like the genes found behind other animals.

00:10:10 Starfish are devoid of the genes that make up a torso.

00:10:14 All this raised the question of our conception of their anatomy.

00:10:18 There is a rumor that Paul McCartney recorded an ultrasonic whistle for his Shetland shepherd

00:10:27 at the end of the Beatles' song "A Day in the Life".

00:10:30 Dogs can perceive these ultrasounds because their hearing is phenomenal.

00:10:34 To shake a single ear, they have to call on 18 different muscles.

00:10:39 This allows them to quickly locate the origin of the sounds

00:10:42 and it is another skill where they surpass us by far.

00:10:45 Their incredible ears sometimes cast a shadow on their trunks.

00:10:49 The odor of dogs is up to 100,000 times sharper than that of humans.

00:10:53 When we only have about 5 million olfactory receptors,

00:10:56 a hunting dog can count up to 300 million.

00:10:59 Another study has shown that dogs and great dolphins

00:11:05 could share a fascinating similarity with humans.

00:11:08 They call their loved ones by their name when they are separated.

00:11:12 This would make them the first animals known for this.

00:11:15 These researches have revealed that dolphins

00:11:17 reproduced the characteristic whistling of one of their own

00:11:20 when they were away from their peers.

00:11:23 In the recordings of the research program on Sarasota dolphins,

00:11:27 pairs of dolphins were kept in separate basins,

00:11:30 but they could still communicate with each other.

00:11:33 And their babbling imitated the unique whistling of their dolphin companions.

00:11:37 Then we have the Flemish and their very particular eating practices.

00:11:44 They are often seen feeding with their head positioned upside down.

00:11:48 This distinctive behavior is linked to the anatomy of their mouths

00:11:51 and the mechanics of their long, elegant necks.

00:11:54 Birds are filter animals,

00:11:56 which use their tongues as effective tamis to sort food.

00:11:59 When a Flemish dips his neck in the water,

00:12:01 he essentially positions his mouth upside down.

00:12:04 Then the bird flaps its beak and skillfully propels the water

00:12:07 through extensions in the form of a comb along this one.

00:12:11 It also uses its tongue to expel the water

00:12:13 while retaining all the collected food.

00:12:16 If you watched the film "The Wisdom of the Pigeon",

00:12:22 you may already know that they are able to link with humans.

00:12:26 But this time, we will focus solely on the anatomy of this creature.

00:12:31 Pigeons have three hearts.

00:12:33 One heart pumps blood through their bodies,

00:12:35 and the other two work as a concert to send this blood to the animal's branches.

00:12:40 Pigeons also have nine brains,

00:12:42 each of their eight tentacles has its own mini brain.

00:12:46 These allow each tentacle to move independently at a lightning speed.

00:12:51 There is also a ninth brain,

00:12:53 which supervises the entire nervous system of the octopus.

00:12:57 Opossums are also very intelligent, in their own way.

00:13:03 They are known to feign death when their life is threatened.

00:13:07 If they are confronted with predators,

00:13:09 opossums try to intimidate their enemies by showing their tails,

00:13:13 whistling and growling.

00:13:15 However, when all these tactics fail,

00:13:18 opossums resign themselves to closing their eyes

00:13:21 and collapse on the side to pretend to be dead.

00:13:24 To perfect the illusion, an opossum can also drool,

00:13:27 let his tongue hang and even get on it to better believe in a sudden death.

00:13:32 It is remarkable that opossums can maintain such a state for several hours,

00:13:36 waiting to be sure that the threat has disappeared.

00:13:39 Monkeys can be very noisy when they call each other.

00:13:44 But the cry of the screaming monkey can travel about 5 km

00:13:48 if the right conditions are met.

00:13:50 Males are generally noisier than females.

00:13:53 This sound is actually created by pulling air

00:13:55 through the space of a large bone in the animal's throat.

00:13:59 This bone is larger in males than in females.

00:14:02 And that's why males scream louder.

00:14:04 Polar bears have black skin under all this fur.

00:14:10 Their white and fluffy fur is actually translucent.

00:14:13 They only look white because they reflect the visible light

00:14:16 and the skin itself is deep black.

00:14:19 These polar bears are just as impressive when it comes to swimming.

00:14:23 They can reach a top speed of 10 km / h in the water,

00:14:27 which is rather fast for such big creatures.

00:14:30 They can swim for miles and continue for hours.

00:14:33 Their big legs are made for swimming.

00:14:36 They use them to rummage in the water while their hind legs remain straight

00:14:40 and act as a guide.

00:14:42 They help them to navigate.

00:14:44 Since we went to see the polar bears,

00:14:47 we could as well add a romantic fact about the mancho.

00:14:51 The mancho Papu and Adélie stand out with generous "propositions".

00:14:55 They offer their potential partners precious pebbles,

00:14:58 essential in view of the construction of their nest

00:15:01 in the desolate landscapes of Antarctica.

00:15:03 If the female mancho accepts this pebble,

00:15:05 they are bound for life and ready to mate.

00:15:08 Another study revealed that our adorable domestic cats

00:15:12 share more than 95% of their genetic heritage with tigers.

00:15:16 These charming hairy balls also reproduce many behaviors of their wild parents,

00:15:21 such as marking their territory by their smell

00:15:24 and the classic "tracking and leaping" as a game.

00:15:28 Biologically, however, the brain of a cat is quite similar to that of a human.

00:15:33 We share identical emotional regions in our brains.

00:15:36 Cats can also produce up to 100 different sounds.

00:15:40 Mancho have tubes, or cylinders, eyepieces.

00:15:46 These elongated-shaped eyes do not perform the same movement as our eyeballs.

00:15:51 Our eyes can move in almost all directions.

00:15:54 Mancho must make a full turn through their body or head to look around them.

00:16:00 All this because of their night vision.

00:16:03 To master the art of seeing in the dark,

00:16:06 they need large corneas capable of collecting each particle of light.

00:16:10 Most nocturnal animals, such as lorilens or tarsiers,

00:16:14 have huge eyes to handle this task.

00:16:17 But mancho have small skulls,

00:16:19 so that their eyes cannot grow any larger.

00:16:22 Manchos are known for their ability to survive,

00:16:28 and a key reason for this lies in their unique brain structure.

00:16:32 They have two brains, one in their head,

00:16:35 and one more rudimentary at their abdomen.

00:16:38 If they are so difficult to catch,

00:16:40 it is because these animals react extremely quickly.

00:16:43 They have small hairs on their hind legs,

00:16:46 which can feel the slightest breeze.

00:16:48 When these hairs are braiding, the mancho does not waste time.

00:16:52 It instantly goes into escape mode.

00:16:55 Research has shown that a mancho could react in just 1/20th of a second.

00:17:00 So, the moment we turn on the light or catch something to crush it,

00:17:04 the mancho is already running at full speed.

00:17:07 Cats can have dreams.

00:17:09 Sometimes, you can see the moustaches of your cat,

00:17:12 or its paws giving little kicks while it sleeps.

00:17:15 This does not necessarily mean that your animal is having a nightmare.

00:17:18 It is enough to be interested in human sleep

00:17:21 to get an idea of what is happening in our feline friends.

00:17:24 During paradoxal sleep, or REM,

00:17:26 our brain becomes very active, almost as much as it wakes up.

00:17:30 It is also the ideal time to dream.

00:17:33 REM sleep is thus named because of the rapid movements

00:17:36 that our eyes make under our eyelids.

00:17:38 But while our eyes can move,

00:17:40 the rest of our body remains still.

00:17:42 The emphasis is put on what is happening in our heads.

00:17:45 It is also true for cats.

00:17:47 Apart from a movement here and there,

00:17:49 cats generally do not move much when they purr.

00:17:52 I have some great news for you.

00:17:55 Rats are ticklish.

00:17:57 In any case, it was news for me.

00:17:59 Anyway, they have what is called a "laughter center" in their middle brain.

00:18:04 And they become active when someone tickles their animals

00:18:07 or when they go out for fun and playful activities.

00:18:11 Researchers discovered this in 2016

00:18:14 after tickling the belly of rodents

00:18:16 and listening to their little high squeaks.

00:18:19 Calabrhes are the only birds we knew

00:18:21 that can fly backwards.

00:18:23 They do it mainly when they want to get away from the flowers.

00:18:26 And here is an animal that is unable to retreat.

00:18:29 The kangaroo.

00:18:30 They can jump and travel long distances.

00:18:33 But the structure of their powerful hind legs

00:18:35 and their large tails prevent them from walking backwards.

00:18:39 Narwhals are these strange creatures

00:18:43 that look like some kind of sea unicorn.

00:18:45 This "horn" on their head is not a defense.

00:18:48 It is a huge tooth

00:18:50 that comes out through the upper lip of the male narwhals.

00:18:53 This tooth probably plays a role in their nuptial parade.

00:18:57 Pink flamingos are not really pink.

00:19:00 They are born gray.

00:19:01 But during their life, they eat a lot of algae

00:19:04 and other foods containing a red-orange pigment

00:19:07 that we know as beta-carotene.

00:19:09 This pigment is decomposed

00:19:11 and ends up in their skin and feathers,

00:19:14 which makes them pink.

00:19:15 They have to eat a lot of these foods to stay that way.

00:19:19 If we humans wanted to change the color of our skin,

00:19:22 we would not be able to eat enough beta-carotene-rich foods

00:19:27 to become really pink or, in our case,

00:19:30 completely orange.

00:19:32 The lazy ones are really slow.

00:19:36 All the jokes and references to their subject are true.

00:19:40 But they are also very skilled swimmers.

00:19:42 And they move in the water three to four times faster than on land.

00:19:47 They can do the breaststroke just like humans.

00:19:49 And it's an important skill for them

00:19:51 because they are tropical animals

00:19:53 living mainly in the jungle.

00:19:55 And these areas are often flooded.

00:19:57 Tigers are the largest members of the feline family.

00:20:00 And yes, even bigger than lions.

00:20:03 Then, no tiger has the same stripes.

00:20:06 Their fur is actually a camouflage,

00:20:09 which is useful when they need to find the ideal spot

00:20:12 where their prey will not see them.

00:20:14 It is interesting to note that their skin is also striped,

00:20:18 not just their fur.

00:20:19 And their stripes are as unique as our fingerprints.

00:20:23 Even if they look rather innocent and funny,

00:20:27 you would not want to disturb a rhino.

00:20:30 These wild animals are among the few mammal species

00:20:34 capable of poisoning you.

00:20:36 They have ergos on the ends of their hind legs

00:20:39 that can release venom.

00:20:41 They are not so powerful to be a murderer,

00:20:43 but the sting is still very painful

00:20:46 and causes a lot of inflammation and sick adults' problems.

00:20:49 When a coccinella has to defend itself against any predator,

00:20:53 it starts by bleeding its knees.

00:20:55 It is not real blood coming out of its joints.

00:20:58 It is a particular chemical substance that smells very bad

00:21:01 and, consequently, repels predators.

00:21:04 They have another mechanism that helps them survive

00:21:07 in the pitiful animal kingdom, their specific color.

00:21:11 Predators do not really like bright-colored combinations

00:21:14 such as red, orange and black,

00:21:16 because they know that colored creatures in this way

00:21:19 can have a terrible taste.

00:21:21 Cockroaches can be extremely noisy in the morning,

00:21:26 but they do not become deaf,

00:21:28 because they do not even hear how loud their cries can be.

00:21:32 What protects them are some kind of integrated ski-es balls.

00:21:36 Hens have a similar system that reduces the risk of hearing loss.

00:21:40 Not only do they have this protection,

00:21:42 but they can also repel their cochlear cells

00:21:46 if they are damaged in just a few days.

00:21:49 Hibou do not really have eyeballs.

00:21:51 They have something that looks more like eye tubes.

00:21:55 And they can not move them from left to right

00:21:58 as we can do with our eyes.

00:22:00 That's why these birds have incredibly flexible necks.

00:22:03 They are able to turn their heads at 270 degrees.

00:22:07 In comparison, humans can only turn their heads at 180 degrees.

00:22:11 That's why hibou have a specific blood vessel system in their heads.

00:22:16 They bring fresh blood to the brain

00:22:18 if a bird turns its head too quickly and cuts its circulation.

00:22:22 Swim straight in front of you.

00:22:27 You may remember the way Dory, the blue surgeon fish,

00:22:31 sang it in Nemo's world.

00:22:34 Dory was not a shark,

00:22:36 but it is a message that some species of sharks

00:22:39 must take to the letter.

00:22:41 The small sharks, the big white sharks,

00:22:44 the baleen sharks and other species of fish

00:22:47 continue to swim all the time.

00:22:49 Otherwise, they stop breathing.

00:22:52 We do not use our lungs to breathe.

00:22:56 And some sharks use a method called "buccal pump".

00:23:01 This means that they swim with their mouths open.

00:23:04 This way, they allow water to flow through their gills

00:23:09 and thus to extract oxygen.

00:23:11 The most dangerous animal on our planet is not a bear,

00:23:15 a shark or a tiger with sharp teeth.

00:23:18 It is something much smaller.

00:23:20 The mosquito.

00:23:21 Not only is it extremely irritating,

00:23:24 but it also transmits serious diseases

00:23:26 such as yellow fever, malaria or dengue.

00:23:30 Every year, hundreds of thousands of people are killed by such diseases.

00:23:35 Mosquitoes also outnumber all other creatures around the world,

00:23:40 except termites and ants.

00:23:43 Grizzlies are incredibly strong animals

00:23:48 with a powerful bite

00:23:50 capable of crushing a bowling ball.

00:23:52 This is why they are not allowed in the bowling alleys.

00:23:56 Despite this, they are essentially small eaters.

00:23:59 They are strong enough to make their meal everything they encounter,

00:24:03 including a bison, a moose or a caribou.

00:24:06 But they always like to nibble their fruit, nuts and other berries,

00:24:10 or even a little unlucky mouse

00:24:13 that would get lost in the predator's mouth.

00:24:15 The desert teipan is the most venomous snake on the planet.

00:24:19 We also know it as "Oxuranus microlepidotus".

00:24:23 It lives in Australia.

00:24:25 A single bite secretes enough venom to prove fatal

00:24:29 to at least a hundred adult humans.

00:24:31 And half an hour is enough

00:24:33 if you have nothing to treat the bite immediately.

00:24:35 It is said that these snakes are most often shy

00:24:38 and prefer to worry about their own business.

00:24:40 But like other animals,

00:24:42 they will attack if they feel threatened or provoked.

00:24:45 There is a type of turtle that can stay alive

00:24:50 for months under the ice breathing through its behind.

00:24:53 When it is colder,

00:24:55 some animals can't find a safe place to stay.

00:24:58 They must survive in harsh winter conditions wherever they are.

00:25:03 And while bees are comfortable in their nests

00:25:06 and the owls sleep in caves,

00:25:08 the turtles have no choice but to stay in their frozen ponds.

00:25:11 As the ice limits their access to the air,

00:25:14 they directly extract the oxygen from the water

00:25:16 and breathe through their behind.

00:25:18 Yes, I admit that it would be very practical.

00:25:21 It is well known that crows are incredibly intelligent animals.

00:25:25 They excel in problem solving.

00:25:28 But it seems that they also have an impressive social intelligence.

00:25:32 They are very in tune with their feelings

00:25:35 as well as with the emotions of their companions.

00:25:38 If a crow in the group feels moody,

00:25:41 it is likely that it also attracts others.

00:25:44 A real joy-seeker.

00:25:46 When it sees a bird that doesn't like certain food

00:25:49 and expresses it very vividly,

00:25:51 it also loses all interest in its own food.

00:25:54 The pistol shrimp is one of the noisiest animals in the world,

00:26:01 even if it is tiny.

00:26:03 Only one can swim about 900 meters long.

00:26:06 When it detects a prey,

00:26:08 it opens its big claw,

00:26:10 which can reach up to half the length of its own body,

00:26:13 at least between one and two meters.

00:26:15 Then it reaffirms the pinch very quickly,

00:26:18 which produces an extremely powerful ball jolt

00:26:21 of almost 100 km / h.

00:26:23 These balls can twist

00:26:25 or even finish the prey that the shrimp is trying to catch.

00:26:28 And when the bubbles burst,

00:26:30 they produce an surprisingly strong detonation

00:26:33 of more than 210 decibels.

00:26:35 Crocodiles are even more frightening than we thought,

00:26:39 because many of them can gallop like goats.

00:26:42 They probably inherited this ability

00:26:45 from their ancient crocodile-morph ancestors,

00:26:47 who were as clumsy as cats,

00:26:49 had long legs

00:26:51 and could run at a speed of about 18 km / h.

00:26:55 The smallest crocodiles gallop most often

00:26:58 when something pursues them.

00:27:00 But the caimans and alligators

00:27:02 obviously don't need to use this skill.

00:27:05 You are the most likely to take your legs

00:27:08 at your own risk when you see them.

00:27:11 It's just an ordinary day.

00:27:14 As usual, you take a shower

00:27:16 before starting to prepare for work.

00:27:18 Everything goes as planned,

00:27:20 until everything goes to shit.

00:27:23 A clumsy gesture,

00:27:25 a little water spilled on the floor

00:27:27 and here you are fighting with your arms in the air,

00:27:29 your body approaching the ground

00:27:31 at a frightening speed.

00:27:33 Everything turns black.

00:27:35 The first thing you hear

00:27:38 is a sharp whistle in your head.

00:27:40 "Ouch, your head, ouch!"

00:27:43 You get up with caution.

00:27:45 There is no blood and that's even better.

00:27:48 What is even better

00:27:50 is that the annoying noise stops abruptly.

00:27:52 By holding your head,

00:27:54 you leave the bathroom

00:27:56 and you miss to stumble on your cat Milo.

00:27:58 He meows,

00:28:00 then a clear voice in your head tells you,

00:28:02 "You big clumsy!"

00:28:04 "Huh?"

00:28:05 You turn your head with fear,

00:28:07 but you see no one.

00:28:09 There is only you and ... Milo?

00:28:11 You probably hit your head

00:28:13 with your thoughts.

00:28:15 You raise your shoulders and you go to the kitchen.

00:28:17 Milo follows you.

00:28:19 You hear incessant snoring.

00:28:21 "Why can he sleep in the room

00:28:23 while I am forbidden to stay?

00:28:25 Why haven't I had my meal yet?

00:28:27 This human is too lazy.

00:28:29 Should I scratch the sofa

00:28:31 or leave a mouse on his pillow?"

00:28:33 The first thought that comes to mind is,

00:28:35 "Are there mice in the house?"

00:28:37 The second is more relevant.

00:28:39 "I'm losing the ball.

00:28:41 I'm losing the ball."

00:28:43 In automatic driving mode,

00:28:45 you pour some milk into Milo's bowl

00:28:47 and you fill another one with croquettes.

00:28:49 The cat doesn't seem to be satisfied

00:28:51 with your speed if we believe his ...

00:28:53 Oh, for heaven's sake, move, man!

00:28:55 Ok, now you will have to live

00:28:57 knowing that your beloved cat Milo

00:28:59 actually has the character

00:29:01 of an old grumpy man.

00:29:03 Oh!

00:29:05 You decide to lock yourself again

00:29:07 in the bathroom

00:29:09 to feel exhausted.

00:29:11 You sit down heavily on the toilet

00:29:13 and you miss falling from your throne

00:29:15 upside down when you hear

00:29:17 noisy arguments.

00:29:19 After looking around you,

00:29:21 you discover that apparently

00:29:23 there are not only mice

00:29:25 but also cockroaches in your house.

00:29:27 Simply brilliant!

00:29:29 Currently, you have your eyes fixed

00:29:31 on a couple of these insects

00:29:33 who seem to be flirting.

00:29:35 At least one of them accuses the other of ...

00:29:37 What? Of cheating?

00:29:39 You've heard enough!

00:29:41 You get ready to leave the bathroom

00:29:43 when you hear a "BANG!"

00:29:45 In the bathroom, you find your cat lying on the floor

00:29:47 under a broken flower pot.

00:29:49 The worst part is that he looks really hurt.

00:29:51 He keeps whining and meowing

00:29:53 "I'm in pain, I'm in pain,

00:29:55 my leg, ouch, ouch!"

00:29:57 But the sofa can't stay

00:29:59 without scratches today!

00:30:01 You catch Milo,

00:30:03 push him into his carriage,

00:30:05 "Be careful, you, biped!"

00:30:07 and you head to the clinic.

00:30:09 On the way, you have to focus hard

00:30:11 to block the noise of the countless

00:30:13 voices that are attacking you.

00:30:15 The waiting room of the vet is full.

00:30:17 You'll have to wait a long time.

00:30:19 Half an hour later,

00:30:21 your head is ready to explode.

00:30:23 You discover that this yellow python

00:30:27 is suspiciously interested in the hamster

00:30:29 that the young girl who is in the corner

00:30:31 is holding against her chest.

00:30:33 "So, so pretty!"

00:30:35 The hamster is worried about his reserve of nuts.

00:30:39 "Where did I hide them?

00:30:41 Where, where, where?"

00:30:43 A little dog came with an old lady

00:30:45 afraid of needles.

00:30:47 "If this pointy thing gets close to me again,

00:30:49 they'll regret it.

00:30:51 I'll destroy everyone on my way!"

00:30:53 Your turn has finally come.

00:30:55 The vet invites you to her office

00:30:57 and you lean to get Milo

00:30:59 when a young man

00:31:01 who seems desperate

00:31:03 bursts into the room.

00:31:05 "My dog, what's wrong with him?"

00:31:07 The vet looks at you apologizing,

00:31:09 but you are focused on the dog.

00:31:11 He seems weak,

00:31:13 but you manage to understand the words

00:31:15 "chocolate", "yum".

00:31:17 When you tell the vet and the anxious owner

00:31:19 that the dog ate chocolate,

00:31:21 which is actually a poison for dogs,

00:31:23 they look at you with a funny look

00:31:25 and disappear into the doctor's office.

00:31:27 Some time later,

00:31:29 the guy comes out holding the dog

00:31:31 who looks much better than before.

00:31:33 When they're gone, the vet turns to you.

00:31:35 "How did you know that dog ate chocolate?"

00:31:37 "Oh, oh, here we are!"

00:31:39 You decide that honesty

00:31:41 is the best strategy

00:31:43 and you tell the vet that you can understand

00:31:45 what the animals are saying.

00:31:47 Of course, she doesn't believe you.

00:31:49 You have to make an effort to persuade her.

00:31:53 But with the help of two other dogs,

00:31:55 Milo and an old squirrel,

00:31:57 you manage to make her believe

00:31:59 what you're saying.

00:32:01 When you get home,

00:32:03 you have a dizzying look

00:32:05 and you're very hungry.

00:32:07 You only think of eggs and bacon.

00:32:09 "Yum!"

00:32:11 "Wait, bacon?

00:32:13 But that's..."

00:32:15 "Oh, oh, apparently,

00:32:17 you've become a vegetarian!"

00:32:19 Anyway,

00:32:21 that's when everything changes.

00:32:23 You don't know how it happened,

00:32:25 but you become famous overnight.

00:32:27 The next morning,

00:32:29 a loud noise wakes you up.

00:32:31 And it's not like animals were talking to you.

00:32:33 You look out the window

00:32:35 and you see a crowd of people

00:32:37 gathered around your house.

00:32:39 Some are journalists,

00:32:41 but others are owners of pets

00:32:43 who came to ask for help.

00:32:45 Milo is not happy.

00:32:47 While growling non-stop

00:32:49 and calling you by all the names,

00:32:51 he bites your leg

00:32:53 and takes refuge under the stairs.

00:32:55 And you,

00:32:57 you go out to talk to people

00:32:59 and answer questions from journalists.

00:33:01 In the evening, you're exhausted,

00:33:03 but also happy.

00:33:05 You've saved several animals today.

00:33:07 They had serious health problems

00:33:09 and psychological disorders

00:33:11 that their owner couldn't solve alone.

00:33:13 Lying in your bed in the dark,

00:33:15 you think about

00:33:17 how you could use your powers.

00:33:19 That's when your plan takes shape.

00:33:21 Soon,

00:33:23 you become the animal care specialist

00:33:25 most renowned in the world.

00:33:27 You listen to animals

00:33:29 talking about their problems,

00:33:31 you relieve them of their depression,

00:33:33 and you help them solve

00:33:35 their misunderstandings with their owner.

00:33:37 TV shows invite you for interviews.

00:33:39 Your YouTube channel develops every day.

00:33:41 People recognize you in the street

00:33:43 and ask you to take pictures with them.

00:33:45 You travel the world.

00:33:47 You help endangered species

00:33:49 and give lectures.

00:33:51 You open veterinary clinics

00:33:53 all over the world

00:33:55 and invite the best professionals to work there.

00:33:57 You never feel alone.

00:33:59 There's always someone

00:34:01 to talk to or listen to.

00:34:03 At least a few birds

00:34:05 when you're walking in the park

00:34:07 or a few fish when you rarely rest on the beach.

00:34:09 At the same time,

00:34:11 you've become aware of the number of animals

00:34:13 begging for help,

00:34:15 but no one can hear them.

00:34:17 You decide to play

00:34:19 their spokesperson.

00:34:21 It turns out you're now famous

00:34:23 not only in the world of humans,

00:34:25 but also in the world of animals.

00:34:27 They are grateful,

00:34:29 and in return, they start to inform you

00:34:31 about various natural disasters

00:34:33 that are about to occur on the planet.

00:34:35 You've heard that animals

00:34:37 could predict earthquakes

00:34:39 or volcanic eruptions.

00:34:41 And if before, people had to make

00:34:43 efforts to notice the unusual behavior

00:34:45 of certain species,

00:34:47 now animals simply

00:34:49 pass on information

00:34:51 about what's going to happen and where.

00:34:53 With time, you notice

00:34:55 that you spend less time with people

00:34:57 and more time with animals.

00:34:59 Together, you plan campaigns

00:35:01 against zoos, circuses and other places

00:35:03 where animals are held against their will.

00:35:05 And then one day,

00:35:07 the unthinkable happens.

00:35:09 You go home when a black truck

00:35:11 stops next to you.

00:35:13 Several masked guys catch you

00:35:15 and push you inside.

00:35:17 The doors close behind you.

00:35:19 Inside, you discover

00:35:21 that several influential people

00:35:23 are not happy with your activity.

00:35:25 You realize that this trip

00:35:27 is not going to end well.

00:35:29 The guys blindfold you

00:35:31 and drive you somewhere.

00:35:33 But at some point, you lose your footing

00:35:35 and you hit your head against something.

00:35:37 Very hard. You open your eyes.

00:35:39 Milo stands above you

00:35:41 and looks at your extended body

00:35:43 with a certain indifference.

00:35:45 And then the most terrible thing

00:35:47 happens. He meows

00:35:49 what looks like a whole sentence,

00:35:51 turns away and leaves

00:35:53 the bathroom. And...

00:35:55 you don't understand a single meowing

00:35:57 of what he says.

00:35:59 Was all of this just a dream?

00:36:01 Well, let's be realistic.

00:36:03 We humans,

00:36:05 we are rather ordinary.

00:36:07 We are not superheroes

00:36:09 with superpowers.

00:36:11 Right? What?

00:36:13 You didn't know?

00:36:15 The animal world,

00:36:17 has a lot of superheroes.

00:36:19 Some creatures

00:36:21 live forever,

00:36:23 others seem to be laughing at gravity laws.

00:36:25 Others are still immune

00:36:27 to venom, and others

00:36:29 can finally run on water.

00:36:31 Some of them will give you chills.

00:36:33 The first superpower on the list

00:36:35 is the ability to live without water.

00:36:37 Kangaroo rats can

00:36:39 live without water for years.

00:36:41 In fact, it doesn't bother them to live without water.

00:36:43 Humans, however,

00:36:45 can only survive three days

00:36:47 without water. Humans,

00:36:49 0, rat kangaroo, 1.

00:36:51 These little animals live

00:36:53 in extremely arid desert areas

00:36:55 and must draw water

00:36:57 from the seeds and plants they eat.

00:36:59 Although this may seem a little

00:37:01 worrying, kangaroo rats

00:37:03 also know how to draw water

00:37:05 before going to the bathroom.

00:37:07 So, they don't lose a single drop

00:37:09 of this precious moisture.

00:37:11 This could be useful

00:37:13 in sports.

00:37:15 Let me now introduce you to the Peter Parker

00:37:17 of the animal world.

00:37:19 It looks like Spiderman is real,

00:37:21 but he's not human.

00:37:23 Here is a gecko lizard, or simply a gecko.

00:37:25 This creature has the wonderful ability

00:37:27 to climb on all kinds of vertical surfaces

00:37:29 and can even walk on the ceiling.

00:37:31 This feat that defies the laws of gravity

00:37:33 is possible thanks to the unique plantar cushion

00:37:35 of the lizard,

00:37:37 covered with tiny hairs.

00:37:39 They can cling to almost

00:37:41 all surfaces,

00:37:43 whether smooth, hard, rough or soft.

00:37:45 Another funny fact

00:37:47 about these lizards

00:37:49 is that they have no eyelids.

00:37:51 So, they always keep a wide open eye

00:37:53 on what's going on around them.

00:37:55 If you're wondering how they protect

00:37:57 their eyes,

00:37:59 here is the answer.

00:38:01 Their eyes are covered with a transparent membrane,

00:38:03 the cornea.

00:38:05 Of course, they can't close their eyes,

00:38:07 and if they have something in their eye,

00:38:09 they simply lick it.

00:38:11 It's true, they clean their eyelids

00:38:13 by licking them.

00:38:15 You can imagine that this is another super power.

00:38:17 Super sonic super powers?

00:38:19 Yes, of course.

00:38:21 A subtropical shrimp

00:38:23 of about 2.5 cm

00:38:25 disorients its prey with

00:38:27 a shock wave.

00:38:29 Despite its small size,

00:38:31 the pistol shrimp is one of the

00:38:33 noisiest marine animals.

00:38:35 When the shrimp makes its claws snap,

00:38:37 it makes a noise as loud as a sonic boom.

00:38:39 Naturally,

00:38:41 this sound stuns the prey,

00:38:43 and the shrimp can catch it without much effort.

00:38:45 In the world of comics,

00:38:47 there is venom.

00:38:49 In the animal world, there is a type

00:38:51 that can be called anti-venom.

00:38:53 Opossums are known for their very practical trick,

00:38:55 which consists of pretending to be dead

00:38:57 when a predator attacks them.

00:38:59 But that's not all.

00:39:01 These animals are also immune

00:39:03 to the venom of snakes with sonnet

00:39:05 and viper pelliades.

00:39:07 The secret lies in a peptide

00:39:09 that helps opossums neutralize

00:39:11 dangerous chemical substances.

00:39:13 This is why snakes

00:39:15 are one of the favorite snacks

00:39:17 of the opossum's diet.

00:39:19 Their diet also

00:39:21 consists of a curious element, ticks.

00:39:23 An opossum can catch

00:39:25 up to 5000 ticks per season,

00:39:27 and most of them are caught on its own body.

00:39:29 Imagine a fish so famous

00:39:31 that it is called

00:39:33 a dangerous fish.

00:39:35 It is the Mbenga,

00:39:37 which literally translates as "dangerous fish"

00:39:39 in Swahili.

00:39:41 This monster lives in fresh water

00:39:43 and does not hesitate to eat a crocodile.

00:39:45 Not an entire crocodile,

00:39:47 but the Mbenga can easily take a bite.

00:39:49 Finally, to be honest,

00:39:51 Mbengas are afraid of crocodiles,

00:39:53 just like crocodiles are afraid of Mbengas.

00:39:55 You are watching this video

00:39:57 with a P like this, aren't you?

00:39:59 Well, all the gadgets we own,

00:40:01 we owe them in a way

00:40:03 to electric eels.

00:40:05 All gadgets have batteries,

00:40:07 and eels have contributed a lot

00:40:09 to the invention of an electric battery in 1800.

00:40:11 I know, I know,

00:40:13 batteries have changed

00:40:15 in an unrecognizable way since then,

00:40:17 but still, the first electric battery

00:40:19 was invented thanks to electric eels.

00:40:21 Anyway,

00:40:23 if you see one

00:40:25 and you want to thank her

00:40:27 for her magnificent invention,

00:40:29 avoid doing it.

00:40:31 The problem is that they can deliver shocks

00:40:33 going up to 860 volts.

00:40:35 You don't want to experience it.

00:40:37 Let's talk now about the Dracula tale

00:40:39 of the animal kingdom.

00:40:41 No, I'm not talking about bats.

00:40:43 I'm talking about the vampire fish Akrok.

00:40:45 These fish are known as Payara

00:40:47 and have two long horns

00:40:49 on the base of their lower jaw.

00:40:51 That's why some people

00:40:53 associate them with vampires.

00:40:55 Hippos are the gurus of beauty

00:40:57 since they know how to save

00:40:59 a fortune on skin care.

00:41:01 Living under the harsh African sun,

00:41:03 these secret animals have

00:41:05 a red oily substance

00:41:07 resembling sweat

00:41:09 that evaporates and keeps the body

00:41:11 of the animals cool.

00:41:13 In addition, this liquid serves

00:41:15 both moisturizing creams,

00:41:17 and antibiotics,

00:41:19 but they are not the only ones

00:41:21 to have such a superpower.

00:41:23 Shrimp also know

00:41:25 how to produce a natural sunscreen,

00:41:27 but they use it

00:41:29 to protect their eyes.

00:41:31 These are amino acid pigments

00:41:33 and these pigments act

00:41:35 like special filters

00:41:37 that also contribute to the clarity

00:41:39 of their vision.

00:41:41 This is what I call multitasking.

00:41:43 Hurricanes have dark spots

00:41:45 that make them even cuter.

00:41:47 But these black circles are not there

00:41:49 only to make our friends

00:41:51 even more adorable.

00:41:53 They also act as integrated sunglasses.

00:41:55 The dark fur of the spots

00:41:57 blocks the burning sun,

00:41:59 which allows the hurricane

00:42:01 to look directly at the sky.

00:42:03 In addition, thanks to this,

00:42:05 the sentry, a hurricane

00:42:07 that watches birds and other predators,

00:42:09 can easily see

00:42:11 the danger and alert

00:42:13 its companions.

00:42:15 Wild goats are famous

00:42:17 for their climbing skills,

00:42:19 but it is the Alps' Bouquetin,

00:42:21 in northern Italy,

00:42:23 which is the champion.

00:42:25 This animal can climb

00:42:27 almost all vertical surfaces,

00:42:29 thus defying several laws

00:42:31 of physics.

00:42:33 It is interesting to note

00:42:35 that the animals that walk

00:42:37 on the walls of the steepest cliffs

00:42:39 are generally sea goats

00:42:41 and can use flat horizontal surfaces.

00:42:43 They are clever.

00:42:45 Salmons are skilled sailors

00:42:47 who could make most drivers

00:42:49 blush with shame.

00:42:51 However, this competition

00:42:53 would not be fair.

00:42:55 After all, salmon can feel

00:42:57 the magnetic field of the planet

00:42:59 and use it to orient themselves

00:43:01 if they get lost.

00:43:03 If you have trouble orienting yourself

00:43:05 in the city,

00:43:07 a salmon could help you.

00:43:09 Some protect themselves

00:43:11 with venom or vile bites,

00:43:13 while others use

00:43:15 chemical tricks to protect themselves.

00:43:17 Listen to this.

00:43:19 Some species of millipedes

00:43:21 produce hydrogen cyanide

00:43:23 and lexude when they feel threatened.

00:43:25 Hydrogen cyanide is inodorous

00:43:27 but very toxic.

00:43:29 A single small millipede

00:43:31 cannot seriously injure you,

00:43:33 but you risk burning

00:43:35 or even cloaking if your skin is sensitive.

00:43:37 In addition,

00:43:39 to make the picture even more frightening,

00:43:41 some millipedes shine in the dark.

00:43:43 So be careful.

00:43:45 And if you see a bright spot

00:43:47 at night,

00:43:49 save yourself as soon as possible.

00:43:51 When the millipede feels threatened,

00:43:53 it sprays a burning liquid

00:43:55 from the end of its abdomen

00:43:57 emitting a dry noise.

00:43:59 As soon as the lepidopterus senses a danger,

00:44:01 a chemical reaction occurs

00:44:03 in special tanks located in its abdomen.

00:44:05 The heat released by this process

00:44:07 almost reaches the boiling point

00:44:09 and also produces a special gas

00:44:11 that triggers the ejection.

00:44:13 This super protection is generally fatal

00:44:15 for attacking insects.

00:44:17 I imagine.

00:44:19 Jesus Christ lizards

00:44:21 have the strange ability to run on water.

00:44:23 First of all,

00:44:25 their hind legs are equipped with long toes

00:44:27 whose skin stripes can spread over the water.

00:44:29 Thus, a larger surface

00:44:31 of the lizard's foot

00:44:33 is in contact with the water.

00:44:35 Then, when it runs on the water,

00:44:37 its legs move at an incredible speed.

00:44:39 It creates small air pockets

00:44:41 that make the animal impatient

00:44:43 and keep it on the surface.

00:44:45 Leopards are not always very interesting,

00:44:47 but that does not make them less surprising.

00:44:49 These tiny animals can jump

00:44:51 about 50 times the length of their body.

00:44:53 If people could do that,

00:44:55 we would be able to jump

00:44:57 approximately 1.5 km in the air.

00:44:59 Well,

00:45:01 let's try.

00:45:03 The most curious thing

00:45:05 about the amazing ability of the lizards

00:45:07 is that they shoot most of the power

00:45:09 of their jumps, their toes

00:45:11 and not their knees.

00:45:13 What is your favorite animal superpower?

00:45:15 I vote for the kangaroo.

00:45:17 I do not like to wait in line to go to the toilet.

00:45:19 The sky suddenly turns orange.

00:45:23 When you open your eyes,

00:45:25 you see millions of butterflies.

00:45:27 You have had the chance

00:45:29 to witness a natural spectacle

00:45:31 without anything like it.

00:45:33 The annual migration of monarch butterflies.

00:45:35 Every fall,

00:45:37 when the days shorten

00:45:39 and the temperatures drop

00:45:41 in the northeast of the United States and Canada,

00:45:43 these magnificent creatures leave

00:45:45 their summer breeding areas.

00:45:47 They travel up to 5000 km

00:45:49 to Mexico

00:45:51 and never return.

00:45:53 Their ideal wintering ground

00:45:55 is nestled in the mountains.

00:45:57 Millions of monarch butterflies

00:45:59 live safely there in the thick branching

00:46:01 of the Ollamel pine trees.

00:46:03 Once the winter is over,

00:46:05 it is time for them to go north.

00:46:07 They first make a halt on the Texas coast

00:46:09 to mate and lay their eggs

00:46:11 on asclepias plants.

00:46:13 A few days later,

00:46:15 these eggs turn into caterpillars

00:46:17 that feed on the plant

00:46:19 until it turns into adult butterflies.

00:46:21 It is then their turn

00:46:23 to continue their journey north

00:46:25 in search of a new breeding ground.

00:46:27 Thus, the generations

00:46:29 succeed each other along their journey

00:46:31 and it may take up to five

00:46:33 to reach Canada's final destination.

00:46:35 It is a real mystery of nature

00:46:37 that these butterflies traveling south

00:46:39 can live up to eight months

00:46:41 thanks to the air currents

00:46:43 when the same species

00:46:45 only completes its life cycle

00:46:47 in five to seven weeks.

00:46:49 Scientists still do not know

00:46:51 why monarchs migrate

00:46:53 to this area.

00:46:55 All this could be linked

00:46:57 to the flowering of asclepias,

00:46:59 their main source of food.

00:47:01 And the butterflies probably move

00:47:03 depending on the position of the sun.

00:47:05 The humpback whales are

00:47:13 real champions in terms of migration

00:47:15 and gigantism within mammals.

00:47:17 They travel up to 8,000 km

00:47:19 in pursuit of their meal.

00:47:21 In summer,

00:47:23 they move to the poles,

00:47:25 in colder waters,

00:47:27 where krill and small fish abound.

00:47:29 In winter,

00:47:31 they head south,

00:47:33 to the tropical waters of the equator.

00:47:35 Whales also migrate to mate.

00:47:37 They have specific territories

00:47:39 where they gather in this goal.

00:47:41 During the winter breeding season,

00:47:43 it is possible to hear the whales

00:47:45 singing badly,

00:47:47 probably to attract females

00:47:49 They produce a long series of calls

00:47:51 and can repeat the same song

00:47:53 for several hours.

00:47:55 When a new song is heard,

00:47:57 all the singers who migrate around

00:47:59 take up the new melody.

00:48:01 It is amazing to see how they do it

00:48:03 when the distance between groups

00:48:05 can be more than 5,000 km.

00:48:07 Sea turtles migrate

00:48:11 for more sentimental reasons.

00:48:13 For hundreds of millions of years,

00:48:15 these cute little creatures

00:48:17 return to the exact place

00:48:19 where they were born,

00:48:21 to lay their eggs.

00:48:23 They can travel several thousand kilometers,

00:48:25 especially when the season changes

00:48:27 and the waters reach a more comfortable temperature.

00:48:29 It can take them years,

00:48:33 because some of them cross the Pacific Ocean

00:48:35 from Indonesia to the west coast

00:48:37 of the United States and Canada,

00:48:39 which represents a total of 6,000 km.

00:48:41 But how to find the exact place

00:48:43 they need if their parents

00:48:45 never gave them GPS coordinates?

00:48:47 Scientists have discovered that they were

00:48:51 located by using the invisible lines

00:48:53 of the Earth's magnetic field.

00:48:55 It turns out that each part of the coast

00:48:57 has unique magnetic characteristics.

00:48:59 Turtles remember it

00:49:01 and thus move

00:49:03 using their internal compass.

00:49:05 The magnetic field changes slowly but surely

00:49:07 and the turtles must therefore move

00:49:09 their nesting sites accordingly.

00:49:13 Salmons are born in freshwater

00:49:15 and reach the ocean at an early age.

00:49:17 Atlantic salmon is brown

00:49:19 and tanned when it travels

00:49:21 hundreds of kilometers in freshwater.

00:49:23 Then it takes a silver shade in the ocean

00:49:25 where it travels more than 1,000 km.

00:49:27 Adult salmon

00:49:29 remain in the ocean for 1 to 5 years,

00:49:31 feeding mainly on plankton.

00:49:33 It is then time

00:49:35 for them to return to freshwater

00:49:37 to lay eggs.

00:49:39 On the way back to their breeding area,

00:49:41 they must climb hundreds of meters

00:49:43 of uneven ground in the mountains.

00:49:45 This difficult journey is called

00:49:47 "salmon migration".

00:49:49 They undertake this climb

00:49:51 because they know that the stream

00:49:53 they are heading to will be conducive to the bridge

00:49:55 and that they will meet the right species

00:49:57 to mate with.

00:49:59 Young salmon remember the smell of their

00:50:01 original stream and probably even note

00:50:03 the different points of the journey to the ocean

00:50:05 to find it.

00:50:07 Just like sea turtles,

00:50:09 Atlantic salmon are like compasses

00:50:11 for their travels.

00:50:13 Pacific salmon and most of the male

00:50:15 Atlantic salmon live only a few weeks

00:50:17 after the cold,

00:50:19 and some female Atlantic salmon

00:50:21 survive and migrate again to the ocean.

00:50:23 Caribou,

00:50:25 better known as "queens",

00:50:27 are the champions of migration

00:50:29 among terrestrial mammals.

00:50:31 Every spring, they cover an area

00:50:33 of about 650 km in Alaska,

00:50:35 from their winter food

00:50:37 to their summer food.

00:50:39 Individuals travel up to 5000 km,

00:50:41 but the migration of the herds

00:50:43 is much more spectacular.

00:50:45 The largest, the Arctic West Herd,

00:50:47 has no less than 26,000 members,

00:50:49 and its migration territory

00:50:51 covers an area higher

00:50:53 than that of California.

00:50:55 Scientists put emitter collars

00:50:57 on some members of the herd

00:50:59 and take thousands of photos

00:51:01 to list them.

00:51:03 This census is organized every three years,

00:51:05 to see if the numbers

00:51:07 of their population increase or decrease,

00:51:09 and to follow their migration pattern.

00:51:11 Caribou face all these migratory

00:51:13 difficulties in order to raise

00:51:15 their newborns safely.

00:51:17 They thus reach remote areas

00:51:19 where royal eagles,

00:51:21 wolves and other grizzlies

00:51:23 will not bother the young

00:51:25 during their first weeks,

00:51:27 who are the most vulnerable.

00:51:29 Another good reason to take the road

00:51:31 north is to protect yourself from mosquitoes,

00:51:33 which are a real nuisance

00:51:35 during the hottest months.

00:51:37 In addition, the queens get fresh

00:51:39 and seasonal food in the regions

00:51:41 where they live.

00:51:43 Their migration helps to fertilize

00:51:45 the lands they cross,

00:51:47 which means that the tundra

00:51:49 should thank them for regenerating

00:51:51 and protecting its expanse.

00:51:53 Gnu are related to antelopes

00:51:55 and gazelles.

00:51:57 They spend most of their lives

00:51:59 in the Serengeti Plains,

00:52:01 in the Tufu savannas.

00:52:03 Each year, at the end of the rainy season,

00:52:05 usually in May or June,

00:52:07 millions of gnu go north-west

00:52:09 in search of greener pastures,

00:52:11 and then come back.

00:52:13 This migration is so spectacular

00:52:15 that it is considered one of the seven

00:52:17 wonders of the natural world.

00:52:19 Unfortunately, all gnu do not reach

00:52:21 their final destination,

00:52:23 because they have to cross rivers

00:52:25 full of crocodiles and play hungry lions

00:52:27 and other predators.

00:52:29 If we observe the migration routes

00:52:31 of the libellules,

00:52:33 we can say that they are

00:52:35 real world-riders.

00:52:37 Scientists have discovered

00:52:39 one of these routes,

00:52:41 which extends from India to Maldives,

00:52:43 then to Seychelles, Mozambique

00:52:45 and Uganda, and in the opposite direction,

00:52:47 at a distance of at least

00:52:49 1,000-1,400 km.

00:52:51 This is the longest insect migration

00:52:53 known to date.

00:52:55 It seems that they undertake this epic

00:52:57 journey when temperatures reach

00:52:59 a certain threshold and the days

00:53:01 begin to lengthen.

00:53:03 They then follow the rains that

00:53:05 begin during the moussons season in India

00:53:07 and arrive during the rainy season

00:53:09 in East and South Africa.

00:53:11 A single of these fragile insects

00:53:13 cannot face the entire journey.

00:53:15 It is therefore a kind of relay race

00:53:17 that includes four generations of libellules.

00:53:19 Each generation plays its role

00:53:21 in the journey.

00:53:23 Researchers cannot install radio tracers

00:53:25 on the libellules as they do with other animals

00:53:27 because the insects are too small.

00:53:29 To reconstruct the puzzle of their

00:53:31 migratory route, they have therefore analyzed

00:53:33 21 years of data provided by

00:53:35 volunteer amateurs, as well as

00:53:37 samples of them from museums.

00:53:39 Each of these samples carried a

00:53:41 chemical code that allowed to determine

00:53:43 approximately the origin of the insect.

00:53:45 These data have helped

00:53:47 scientists understand the distance

00:53:49 traveled by such or such insect

00:53:51 at an adult age.

00:53:53 We know that elephants have been crossing

00:53:55 Africa for centuries.

00:53:57 They rely on the memory of the leader

00:53:59 of their herd to remember

00:54:01 these perilous migratory routes.

00:54:03 This great leader of the elephants guides

00:54:05 everyone else to sources of water and

00:54:07 food when the seasons change.

00:54:09 Elephants also migrate to avoid

00:54:11 the dangers that are most often

00:54:13 represented by man.

00:54:15 Elephants have developed their own

00:54:17 communication methods to transmit

00:54:19 information about a possible danger.

00:54:21 They can transmit chemical secretions,

00:54:23 vibrations, gestures, and touch.

00:54:25 Recently, many African countries have

00:54:27 restored some of the oldest

00:54:29 elephant migration routes.

00:54:31 These big-eared animals usually

00:54:33 highlight the dangerous areas

00:54:35 for generations, but as soon as

00:54:37 they know the road is safe,

00:54:39 they take it again.

00:54:41 You decided to dive

00:54:45 underwater for the first time.

00:54:47 The water is clear and the sun

00:54:49 is shining. You take a few selfies

00:54:51 with the fish that pass by when

00:54:53 suddenly the ocean becomes dark

00:54:55 like night.

00:54:57 You look up and say, "Oh,

00:54:59 my God, what is this huge

00:55:01 animal?"

00:55:03 It's definitely not a shark,

00:55:05 not a whale. Is it

00:55:07 a turtle? Yes, but

00:55:09 don't be afraid, it won't hurt you.

00:55:11 If you had lived on this same land

00:55:15 about 72 million years ago,

00:55:17 then maybe this could have really

00:55:19 happened to you.

00:55:21 Scientists have recently discovered

00:55:23 the fossils of a huge sea turtle

00:55:25 that could have reached up to

00:55:27 4 meters in length.

00:55:29 If you have no idea what this

00:55:31 represents, let's look at some examples.

00:55:33 This is the average length of a

00:55:35 hippopotamus, six Golden Retrievers

00:55:37 half-naked, or two

00:55:39 Michael Jordans stacked on top of each other.

00:55:41 The scientific name

00:55:45 for this turtle, the Leviathanocelis

00:55:47 enigmatica, is a tribute

00:55:49 to the legendary sea monster

00:55:51 known as the Leviathan.

00:55:53 Maybe you remember from your mythology

00:55:55 classes at school. The Leviathan is

00:55:57 supposed to be a mythical creature that would

00:55:59 swallow entire ships or sailors

00:56:01 considered too greedy by the creature.

00:56:03 Can you imagine being

00:56:05 swallowed by this huge sea turtle?

00:56:07 Me? I'll pass my turn.

00:56:09 The fossils of this gigantic

00:56:13 creature began to be excavated

00:56:15 between 2016 and 2021

00:56:17 in northern Spain.

00:56:19 The first fossil was located

00:56:21 by a hiker in the Spanish Pyrenees

00:56:23 and it was about 20 cm

00:56:25 long.

00:56:27 The basin of this turtle was

00:56:29 about 98 cm long.

00:56:31 It would certainly be

00:56:33 one of the biggest turtles today

00:56:35 if it hadn't gone extinct.

00:56:37 For your information, the largest

00:56:41 living sea turtle today can reach

00:56:43 up to 2 meters long.

00:56:45 Which is already not bad.

00:56:47 And now, what would you say about a gigantic

00:56:51 prehistoric scorpion?

00:56:53 I bet most people here are not

00:56:55 big fans of these creatures, especially

00:56:57 because they are venomous. That's why

00:56:59 the idea of an aquatic scorpion measuring

00:57:01 nearly 3 meters long could be

00:57:03 the nightmare of some.

00:57:05 Let's just say that if it hadn't

00:57:07 disappeared about 400

00:57:09 million years ago, lakes and

00:57:11 rivers would be much less

00:57:13 bucolic places for humans

00:57:15 today. These gigantic

00:57:17 arachnids were considered first-

00:57:19 order predators at the time, hunting

00:57:21 everything from fish to other animals,

00:57:23 including their own species.

00:57:25 Ouch, I have chicken skin just

00:57:27 imagining these monsters.

00:57:29 We should thank the asteroid that hit

00:57:31 our planet now or later

00:57:33 in the video.

00:57:35 Another prehistoric animal that

00:57:37 humans would prefer if it was still alive

00:57:39 is the famous Megatherium,

00:57:41 a gigantic-proportioned sloth.

00:57:43 We think that this huge sloth

00:57:45 could have reached up to 6 meters

00:57:47 long. For a weight of

00:57:49 nearly 3.6 trillion kilos.

00:57:51 These remains were

00:57:53 retrovised by the foresters of the

00:57:55 South American spires. The creature

00:57:57 had the habit of sitting on its back

00:57:59 to reach the fins of

00:58:01 its hot-spots. These giant

00:58:03 spires had long claws.

00:58:05 They helped them climb trees.

00:58:07 I must admit,

00:58:09 I don't feel very comfortable imagining

00:58:11 these parasites the size of an elephant

00:58:13 climbing trees.

00:58:15 Oh, of course, some dinosaurs will be

00:58:17 part of our list of oversized creatures.

00:58:19 But before that, here's a funny fact.

00:58:21 Did you know that some dinosaurs

00:58:23 are still alive today?

00:58:25 Researchers have determined

00:58:27 that birds could be classified

00:58:29 as theropods.

00:58:31 These creatures are as redoubtable as

00:58:33 the velociraptor apartheid

00:58:35 and the sea grouper.

00:58:37 I'm sure you heard these names

00:58:39 much earlier if you watched Jurassic Park.

00:58:41 The velociraptor is this

00:58:43 frightening dinosaur that

00:58:45 introduces itself in the kitchens.

00:58:47 Well, they evolved, gained some feathers

00:58:49 and turned into various species

00:58:51 of birds that we know today.

00:58:53 This means that any

00:58:55 bird, from dendon to mesange,

00:58:57 is a direct descendant of dinosaurs.

00:58:59 Now, does the name

00:59:03 Spinosaurus tell you something?

00:59:05 You can admire this huge dinosaur

00:59:07 in some museums today.

00:59:09 It's fossil, I mean.

00:59:11 Spinosaurus was one of the

00:59:13 largest terrestrial predators

00:59:15 to have walked the earth.

00:59:17 Or rather, to have walked the earth

00:59:19 and its waters. Because researchers think

00:59:21 that this dino was semi-aquatic.

00:59:23 It mainly fed on meat,

00:59:25 which means that humans would be

00:59:27 natural prey if they still lived

00:59:29 today.

00:59:31 This carnivorous dinosaur

00:59:33 lived about 90 to 100 million years ago.

00:59:35 It was about 18 meters long,

00:59:37 4 meters high

00:59:39 and weighed up to 22 tons.

00:59:41 Its head was

00:59:43 about the size of 8 bowling balls

00:59:45 and had the shape of the face

00:59:47 of a crocodile.

00:59:49 Basically, the Spinosaurus was

00:59:51 a large African elephant with a crocodile's

00:59:53 mouth.

00:59:55 I'm kidding, but it would have

00:59:57 looked funny, wouldn't it?

00:59:59 A much more attractive dinosaur was

01:00:01 this one, the Patagotitan Mayorum.

01:00:03 It is considered the largest

01:00:05 dinosaur ever lived on

01:00:07 our planet. What made it so

01:00:09 big was its extremely long neck

01:00:11 and its outstretched tail.

01:00:13 You wouldn't want to

01:00:15 stand behind this creature, believe me.

01:00:17 If it decided to make a sudden move

01:00:19 with its tail, you would be catapulted

01:00:21 in the distance. This dinosaur lived

01:00:23 about 100 million years ago

01:00:25 and its fossils were discovered for the

01:00:27 first time in Argentina

01:00:29 around 2012.

01:00:31 It was 36 meters long from head to tail,

01:00:33 which made it almost as big

01:00:35 as a football field

01:00:37 in its width.

01:00:39 Did I mention that it weighed

01:00:41 almost as much as a spaceship?

01:00:43 We're talking about 75 tons.

01:00:45 If it had been a carnivore,

01:00:47 it would have probably been the largest

01:00:49 of the predators. But this big guy

01:00:51 was a peaceful herbivore

01:00:53 whose neck was so long that it could

01:00:55 chew the leaves of the tallest trees.

01:00:57 Cute, isn't it?

01:00:59 We also need to talk about

01:01:01 the chastasaurus.

01:01:03 As its name suggests,

01:01:05 this lizard once populated the region

01:01:07 of Mount Shasta in California.

01:01:09 Even if it was a marine reptile

01:01:11 that probably never set foot

01:01:13 on the mountain itself.

01:01:15 This dino was generally

01:01:17 7 meters long, but there was

01:01:19 a specific variety of this species

01:01:21 that could reach up to 21 meters,

01:01:23 the size of the Great Blue Whale.

01:01:25 This makes it the largest marine reptile

01:01:27 ever to have lived.

01:01:29 A funny fact about the chastasaurus

01:01:31 is that scientists think

01:01:33 it had no teeth,

01:01:35 which means it could only feed

01:01:37 on prey with soft bodies,

01:01:39 like squid, for example.

01:01:41 The next animal on our list

01:01:47 is precisely the Great Blue Whale.

01:01:49 Believe it or not,

01:01:51 the largest living animal on Earth

01:01:53 is still very small.

01:01:55 Nowadays, an average adult

01:01:57 Great Blue Whale can reach

01:01:59 up to 30 meters long and weigh up

01:02:01 to 200 tons.

01:02:03 This is more or less the size

01:02:05 of the quarantine elephants

01:02:07 or the tyrannosaurus

01:02:09 or the 250 people

01:02:11 of the average size.

01:02:13 The whales need to consume

01:02:15 up to 6 million calories

01:02:17 a day to feed

01:02:19 this body or this sound.

01:02:21 Just for your information,

01:02:23 it's the equivalent of 30,000 Big Macs.

01:02:25 But the Great Blue Whales

01:02:27 were not always that big.

01:02:29 They evolved from a

01:02:31 four-legged mammal

01:02:33 that roamed the Earth

01:02:35 about 48 million years ago.

01:02:37 Their ancestor was called Pachycetus

01:02:39 and was only 2 meters long.

01:02:41 Here's another funny fact.

01:02:43 In order to live in the water

01:02:45 as it does today,

01:02:47 the Great Blue Whale had to make

01:02:49 a huge effort to breathe.

01:02:51 The Great Blue Whale can renew

01:02:53 between 80 and 90% of the oxygen

01:02:55 in its lungs every time it breathes.

01:02:57 In comparison,

01:02:59 a human only renews up to 15%.

01:03:01 This allows these creatures

01:03:03 to dive for an entire hour

01:03:05 and reach a stunning

01:03:07 depth of 100 meters.

01:03:09 Elephants were

01:03:11 destined to be part of this list.

01:03:13 African elephants are currently

01:03:15 the largest terrestrial animals

01:03:17 on our planet.

01:03:19 They can reach about 4 meters high

01:03:21 and weigh up to 7 tons.

01:03:23 It's quite small if you compare them

01:03:25 to other animals that have

01:03:27 lived on Earth before, isn't it?

01:03:29 But if you put a human

01:03:31 of about 1.80 meters next to an elephant,

01:03:33 you can see that it is not that small.

01:03:35 African elephants are

01:03:37 larger than their close relatives,

01:03:39 the elephants of Asia,

01:03:41 and they have a life expectancy

01:03:43 similar to that of humans,

01:03:45 so maybe one day,

01:03:47 Pokemon made us all wish

01:03:49 that salamanders were real dragons.

01:03:51 Although this is not the case,

01:03:53 they can still be fascinating.

01:03:55 There is a giant salamander species

01:03:57 that is known to be

01:03:59 the largest living amphibian.

01:04:01 They can reach the size

01:04:03 of an average human,

01:04:05 or 1.80 meters.

01:04:07 I doubt it's a very pleasant

01:04:09 underwater encounter.

01:04:11 Missed again!

01:04:13 You just wasted an hour

01:04:15 running around with a newspaper

01:04:17 trying to catch this fly

01:04:19 that keeps buzzing around your head.

01:04:21 Three questions.

01:04:23 Why isn't it afraid of you?

01:04:25 Why doesn't it go elsewhere?

01:04:27 And how does it get so incredibly fast?

01:04:29 Flies actually have

01:04:31 a fairly normal speed for their size.

01:04:33 It's you who is just a little too slow.

01:04:35 The brain of a small fly

01:04:37 reacts several times faster

01:04:39 than yours when it sees.

01:04:41 One second for you is equivalent

01:04:43 to 5 or 6 seconds for a fly.

01:04:45 When a fly looks at you,

01:04:47 it sees you as if you were

01:04:49 at the bottom of a pool,

01:04:51 moving very slowly.

01:04:53 Drop a ball of mud

01:04:55 through the window of your room

01:04:57 and watch it fall to the ground.

01:04:59 This is about the speed

01:05:01 with which a fly sees things moving.

01:05:03 It has reflexes like a ninja,

01:05:05 but it also has special eyes.

01:05:07 They are divided into thousands

01:05:09 and you use small muscles

01:05:11 to turn your eyes and your head

01:05:13 to look in different directions.

01:05:15 Flies don't have these muscles.

01:05:17 They don't need them.

01:05:19 They can see in all directions

01:05:21 at the same time, or almost.

01:05:23 No matter which way you attack,

01:05:25 this fly will almost certainly see you coming.

01:05:27 You've probably seen supersonic planes

01:05:29 in the movies,

01:05:31 flying and turning at an incredible speed.

01:05:33 A fly is about like that,

01:05:35 but with much more elaborate wings.

01:05:37 It can change direction in mid-flight,

01:05:39 stop and dodge any obstacle.

01:05:41 It can even calculate a flight path

01:05:43 before taking off.

01:05:45 Well, this time you're really going to crush this fly.

01:05:47 As you lift your paper up,

01:05:49 the insect's brain calculates

01:05:51 where it's going to land.

01:05:53 The fly immediately puts its body

01:05:55 in the perfect position,

01:05:57 ready to perform an evasion maneuver.

01:05:59 If your hand moves in front of the insect,

01:06:01 its legs immediately lean back

01:06:03 to help it fly in the other direction.

01:06:05 Wow!

01:06:07 This fly could be an excellent boxer

01:06:09 or a very good goalkeeper.

01:06:11 But why is this fly so worth

01:06:13 staying in the corner

01:06:15 while you're constantly trying to crush it?

01:06:17 Well, because your body is a five-star party

01:06:19 and your skin is the buffet table,

01:06:21 with rows and rows

01:06:23 of delicious treats.

01:06:25 When you move around during the day,

01:06:27 your skin releases sweat,

01:06:29 proteins,

01:06:31 glucose, salt, sugar,

01:06:33 and other chemicals

01:06:35 that flies love.

01:06:37 Imagine you're walking in the desert

01:06:39 and you're hungry and thirsty.

01:06:41 You arrive on a large sand dune

01:06:43 and you see food

01:06:45 at will.

01:06:47 Fruit tables,

01:06:49 sweets, sandwiches,

01:06:51 and the largest soda fountain in the world.

01:06:53 The feeder looks big,

01:06:55 hard, and round.

01:06:57 It's a giant turtle.

01:06:59 Now you know why flies

01:07:01 stay in the corners.

01:07:03 You're the turtle.

01:07:05 You have a small chance of crushing this fly,

01:07:07 but it will still escape

01:07:09 eight out of ten.

01:07:11 Let's say a fly is placed on the table

01:07:13 in your kitchen. Here's what you have to do.

01:07:15 You have to aim a few centimeters

01:07:17 in front of the place

01:07:19 where you think it's going to fly.

01:07:21 The fly's brain will think you're aiming

01:07:23 right at it, so you can get rid of it

01:07:25 and surprise it.

01:07:27 The problem is, it's very difficult

01:07:29 to predict the path the fly will take

01:07:31 to escape. If you're too slow,

01:07:33 why not call for backup?

01:07:35 Here's the Cicindal,

01:07:37 a 2.5-meter-per-second speed.

01:07:39 It can't fly,

01:07:41 but it doesn't matter.

01:07:43 This coelopter runs so fast

01:07:45 that it loses its ability to see when it moves.

01:07:47 It identifies a target

01:07:49 and then starts running at it.

01:07:51 It's not a ninja like the fly,

01:07:53 and it can't change direction

01:07:55 on either side. It has to stop

01:07:57 every time it runs.

01:07:59 You're walking at about 1.5 meters per second,

01:08:01 so the Cicindal

01:08:03 is twice as fast as you,

01:08:05 but for its size, it's incredibly fast.

01:08:07 It travels 125 meters

01:08:09 in one second.

01:08:11 Let's say you're 1.80 meters tall.

01:08:13 You should run

01:08:15 230 meters in one second

01:08:17 to be that fast.

01:08:19 If it's on the same surface as the fly,

01:08:21 it has no chance of escaping.

01:08:23 Or maybe it's time

01:08:25 to call in the air force.

01:08:27 The fly is the fastest

01:08:29 flying insect in the world.

01:08:31 This little creature can reach

01:08:33 55 km/h. It's faster

01:08:35 than a bike going down a hill

01:08:37 at full speed.

01:08:39 The fly's wings also allow it

01:08:41 to fly backwards, right,

01:08:43 left, up and down,

01:08:45 like a helicopter.

01:08:47 No matter how fast the fly moves,

01:08:49 it leaves little chance for the fly.

01:08:51 The fly, the fly,

01:08:53 the fly and the Cicindal are fast

01:08:55 because they don't spend too much time

01:08:57 outside. There are many hungry

01:08:59 creatures in the surroundings,

01:09:01 but there's an insect that runs fast

01:09:03 because if it stopped...

01:09:05 Ouch! To meet

01:09:07 a silver ant so fast,

01:09:09 you have to go to the Sahara desert.

01:09:11 The sand is so hot

01:09:13 that you could fry an egg there.

01:09:15 Very sandy.

01:09:17 That's why the silver ant moves

01:09:19 at a speed of 0.5 meters per second.

01:09:21 It doesn't want to burn its legs.

01:09:23 It also has triangle-shaped hairs

01:09:25 that reflect heat,

01:09:27 which helps it escape the scorching sun.

01:09:29 If this ant was human-sized,

01:09:31 it could run at

01:09:33 600 km/h, faster than

01:09:35 the fastest car in the world.

01:09:37 Another ant has a speed record.

01:09:39 The Dracula ant

01:09:41 can't run as fast as the silver ant,

01:09:43 but it has the fastest

01:09:45 mouth in the world.

01:09:47 It can open and close its jaws

01:09:49 in one blink.

01:09:51 Here's another fast insect,

01:09:53 this time a little closer to the house

01:09:55 or even inside.

01:09:57 The American silver ant can hide

01:09:59 in the walls behind the stove

01:10:01 almost everywhere.

01:10:03 It's almost impossible to catch it.

01:10:05 It can run at 1.5 meters per second.

01:10:07 It's thanks to its six legs,

01:10:09 each with three knees.

01:10:11 Its legs are covered with small hairs

01:10:13 that detect any change in the air.

01:10:15 That's why it reacts so fast

01:10:17 when you enter the kitchen

01:10:19 and turn on the light.

01:10:21 The world record holder

01:10:23 for the fastest creature on Earth

01:10:25 is the size of a sesame seed.

01:10:27 It's a kind of shark

01:10:29 and can move at 322 length of its body

01:10:31 per second.

01:10:33 If you grew this shark to give it

01:10:35 a human size, it could go

01:10:37 almost twice as fast as the speed of sound.

01:10:39 It can even change direction

01:10:41 while moving.

01:10:43 This makes it the fastest

01:10:45 shark on the planet.

01:10:47 But let's find some animals

01:10:49 that can help us compare.

01:10:51 The garden snail

01:10:53 belongs to the mollusk family

01:10:55 and likes to take its time.

01:10:57 If you moved at the speed of a snail,

01:10:59 you would walk twice every two hours.

01:11:01 But snails don't care.

01:11:03 They have existed for hundreds of millions of years.

01:11:05 They use their shells

01:11:07 to protect themselves,

01:11:09 but they also have other tricks.

01:11:11 Some snails emit an unpleasant smell

01:11:13 so that no one bothers them.

01:11:15 If it's too hot and too dry,

01:11:17 snails hide in their shells

01:11:19 and lock themselves in the fresh

01:11:21 drool they make.

01:11:23 This drool also helps them climb trees.

01:11:25 The lazy ones are the slowest mammals

01:11:27 on the planet.

01:11:29 Thanks to their slow metabolism,

01:11:31 food can take up to 16 days

01:11:33 to be digested.

01:11:35 It wouldn't be so hard to catch one of them,

01:11:37 but paradoxically,

01:11:39 their slowness helps them.

01:11:41 But as a lazy one doesn't make sudden movements,

01:11:43 predators don't notice them

01:11:45 just up there among the leaves.

01:11:47 The sloth

01:11:49 is one of the slowest marine creatures.

01:11:51 But it doesn't care too much

01:11:53 that someone bothers them,

01:11:55 except maybe humans on motor boats.

01:11:57 They are huge and their skin is very thick,

01:11:59 a bit like a marine tank,

01:12:01 but much cuter.

01:12:03 Another relatively slow swimmer

01:12:05 is the Greenland shark.

01:12:07 It swims at less than 1 km/h.

01:12:09 Like the sloth,

01:12:11 it is big enough

01:12:13 that no one can challenge it face to face.

01:12:15 But this leads to the most hilarious

01:12:17 swimming technique.

01:12:19 The Greenland shark

01:12:21 is actually slower than all the fish

01:12:23 in the water.

01:12:25 The only chance it has

01:12:27 is to wait for some of its fish to fall asleep,

01:12:29 then it's time to swim for it.

01:12:31 But what's interesting

01:12:33 is that their peaceful way of life

01:12:35 actually extends their life expectancy.

01:12:37 The average life expectancy

01:12:39 of a Greenland shark is between 300 and 500 years.

01:12:41 They live in the North Atlantic

01:12:43 and Arctic Oceans.

01:12:45 Imagine you are cruising

01:12:47 and you see one of these slow-moving giants.

01:12:49 It could be 400 years older than you.

01:12:51 Psst! Run!

01:12:55 Really!

01:12:57 It's not safe outside.

01:12:59 There's a tiger with a saber-toothed tongue.

01:13:01 You should be careful.

01:13:03 What are you doing? Don't look!

01:13:05 How is that possible?

01:13:07 It's because you are in virtual reality.

01:13:09 These big felines

01:13:11 with a nice but very dangerous look

01:13:13 have lived during the last ice age.

01:13:15 And if they decided to appear

01:13:17 on the doorstep,

01:13:19 like a charm,

01:13:21 a saber-toothed cat is waiting for you to buy them some cookies.

01:13:23 The Koi Lakanth,

01:13:27 this fish with an imposing look,

01:13:29 is from a line that has existed

01:13:31 for more than 300 million years.

01:13:33 We thought it didn't exist anymore

01:13:35 until 1938,

01:13:37 when a living Koi Lakanth was found.

01:13:39 Since then,

01:13:41 they have been in the waters of the East African coast

01:13:43 and in the waters of Sulawesi,

01:13:45 in Indonesia.

01:13:47 Dude, I don't want to go swimming

01:13:49 and meet one of these guys face to face.

01:13:51 Their jaws have an intracranial joint,

01:13:53 which means that their mouths

01:13:55 open a lot.

01:13:57 It's so they can eat big prey,

01:13:59 like me. It's not good.

01:14:01 They are huge too.

01:14:03 Imagine a fish that is as long as you

01:14:05 and that weighs as much as an ordinary human.

01:14:07 We thought that the Takahe,

01:14:11 an incapable bird of prey,

01:14:13 had disappeared in 1898.

01:14:15 They are very beautiful, small and multicolored.

01:14:17 Usually not higher than your knee.

01:14:19 But imagine that.

01:14:21 You are hiking

01:14:23 in the Murchison Mountains,

01:14:25 you look around you and you see

01:14:27 the bird you thought was gone.

01:14:29 There, happier than ever,

01:14:31 surviving and refreshing.

01:14:33 An entire Takahe colony

01:14:35 was indeed found only 50 years

01:14:37 after they were declared extinct.

01:14:39 Good job, little bird.

01:14:41 A singing dog?

01:14:43 Have you ever heard of it?

01:14:45 Railey sometimes sings when he's bored

01:14:47 or hungry, but these are

01:14:49 real artists.

01:14:51 New Guinea's singing dogs.

01:14:53 They were recently discovered in the wild

01:14:55 for the first time in 50 years.

01:14:57 Yet they were never

01:14:59 completely extinct at first.

01:15:01 The New Guineans made sure

01:15:03 they were safe next to them.

01:15:05 But in the wild,

01:15:07 it's very rare and difficult to see.

01:15:09 Look, here's one.

01:15:11 New Guinea's singing dogs are called

01:15:13 that because of their famous high singing.

01:15:15 They also sometimes sing together.

01:15:17 A kind of dog choir

01:15:19 where they all scream together.

01:15:21 I bet they sing better than me in the shower.

01:15:25 Not far from here,

01:15:27 we have bats.

01:15:29 But they're a bit different.

01:15:31 Their ears are huge.

01:15:33 I guess that's why they're called

01:15:35 New Guinea's big-eared bats.

01:15:37 Clever!

01:15:39 The species was found when one of them

01:15:41 was accidentally trapped in a bat trap.

01:15:43 Until then, I guess they were

01:15:45 playing hide and seek with us

01:15:47 because until 1890,

01:15:49 they were thought to have disappeared.

01:15:51 They're still not out of the danger zone

01:15:53 because they're not in the habitat.

01:15:55 Imagine you discover a fossil

01:15:57 of a species you thought

01:15:59 was extinct a long time ago.

01:16:01 And two years later,

01:16:03 you find an entire group of bats

01:16:05 living in this species.

01:16:07 That's exactly what happened in 1977

01:16:09 with the New Guinea's

01:16:11 New Guinea's New York's bat.

01:16:13 It's a brownish color

01:16:15 with darker spots on its skin.

01:16:17 Apart from that,

01:16:19 it's just a small bat with bulbous eyes.

01:16:21 The group of living bats

01:16:23 was found near the fossil

01:16:25 on the island of New York.

01:16:27 There aren't many left,

01:16:29 around 500 in fact.

01:16:31 And at the moment,

01:16:33 they're declared vulnerable

01:16:35 by the International Union

01:16:37 for Conservation of Nature.

01:16:39 Are you a fan of turtles?

01:16:41 You'll know when you take a look

01:16:43 at this huge beauty.

01:16:45 It's called the Galapagos turtle

01:16:47 from Fernandina Island.

01:16:49 It was discovered in 1906.

01:16:51 But on February 17, 2019,

01:16:53 we were finally able to look

01:16:55 at one of these beautiful creatures.

01:16:57 It's probably outside

01:16:59 with some of its companions

01:17:01 at the moment,

01:17:03 but it doesn't show up either.

01:17:05 We only know they exist

01:17:07 because there are some traces and smells.

01:17:09 Here's another frog,

01:17:11 the horned marsupial frog.

01:17:13 It's found in Ecuador

01:17:15 in the Choco Forest,

01:17:17 and it's called that

01:17:19 because of its distinctive horn

01:17:21 just above its eyes.

01:17:23 Do you know the pocket

01:17:25 kangaroos use to carry their offspring?

01:17:27 Well, the female horned marsupial frog

01:17:29 also has one,

01:17:31 except it's on its back

01:17:33 and acts like a backpack.

01:17:35 It develops its embryos here

01:17:37 and when it's ready to hatch,

01:17:39 it hatches like a full baby,

01:17:41 unlike ordinary frogs

01:17:43 which start out as tethers.

01:17:45 Another frog,

01:17:47 the starry night frog

01:17:49 or the harlequin frog.

01:17:51 They're black and covered

01:17:53 in a multitude of white spots.

01:17:55 Lost for 30 years,

01:17:57 it was discovered in 2019.

01:17:59 Imagine them as bodyguards,

01:18:01 bodyguards of water,

01:18:03 to be exact.

01:18:05 Oh, that's a very big frog on your screen!

01:18:07 Well, for the Aroaco people,

01:18:09 that's exactly what they are,

01:18:11 bodyguards of water.

01:18:13 They have their own name,

01:18:15 Gouna. It looks like cheese.

01:18:17 When scientists found them,

01:18:19 they met 30 of these little creatures,

01:18:21 while they were expecting

01:18:23 only one at the start.

01:18:25 What a nice surprise!

01:18:27 Here's a tiger for you,

01:18:31 although it doesn't look

01:18:33 like a classic tiger.

01:18:35 It's Tasmanian tiger,

01:18:37 which seems to have disappeared since 1936.

01:18:39 Out of nowhere,

01:18:41 scientists began to spot it

01:18:43 in the wild just 5 years ago,

01:18:45 in 2016.

01:18:47 It looks like a dog,

01:18:49 more than a tiger,

01:18:51 or a fox, maybe.

01:18:53 Just look at its muzzle.

01:18:55 Maybe a mix of the two.

01:18:57 Then some others started to appear too.

01:18:59 And if you think you see one right in front of you,

01:19:01 but you're not sure,

01:19:03 check if it has stripes on its back.

01:19:05 They do exist,

01:19:07 but are still considered extinct

01:19:09 by the British.

01:19:11 OK, let's imagine a horse

01:19:13 that looks like it just came out

01:19:15 of a movie.

01:19:17 Very small, with a magnificent fur,

01:19:19 very well raised.

01:19:21 It's small, but it's not a pony.

01:19:23 It's a Caspian horse.

01:19:25 They have an interesting story.

01:19:27 They were discovered by Louise Leylin,

01:19:29 who married an aristocrat

01:19:31 in 1957.

01:19:33 Having moved to Tehran,

01:19:35 in Iran, she didn't like

01:19:37 the horse's behavior there.

01:19:39 So she took things into her own hands.

01:19:41 She took a few people with her,

01:19:43 and they went to the mountains

01:19:45 of the Caspian Sea.

01:19:47 There, they found three of these

01:19:49 magnificent little horses.

01:19:51 That's how the story happened.

01:19:53 Then,

01:19:55 an opossum was found

01:19:57 in an unexpected place.

01:19:59 Guess where?

01:20:01 You have three options.

01:20:03 Hiding in a ski resort,

01:20:05 or in the bathroom of an apartment.

01:20:07 Which one do you choose?

01:20:09 You have three seconds.

01:20:11 The right answer is a ski resort.

01:20:17 Yes, this opossum was called

01:20:21 the "Mountain Mink Opossum,"

01:20:23 and it's from Australia.

01:20:25 Until now, there have been

01:20:27 three different populations of this little opossum.

01:20:29 But it was thought to have been extinct

01:20:31 until 1966.

01:20:33 There are less than 100 of them,

01:20:35 and the U.S. National Park considers them

01:20:37 as critically endangered.

01:20:39 Also from Australia,

01:20:43 the "Night Perush,"

01:20:45 a pleasure for birdwatchers.

01:20:47 Very beautiful and mysterious,

01:20:49 these little guys live

01:20:51 in very remote areas.

01:20:53 You can probably count on your fingers

01:20:55 the number of times these birds have been seen

01:20:57 since they were found in 1979.

01:20:59 It means how rare they are.

01:21:01 Have you ever seen a pygmy tarantula?

01:21:03 Me neither.

01:21:05 It was only in 2008

01:21:07 that three of them were captured.

01:21:09 Scientists don't want to lose

01:21:11 their movement again,

01:21:13 so they gave them

01:21:15 very small necklaces.

01:21:17 This way, they can live

01:21:19 their lives as happily as ever,

01:21:21 and we'll know they're safe.

01:21:23 The last one I want to talk to you about

01:21:27 is the "Tree Omar,"

01:21:29 but as its name might make you think wrongly,

01:21:31 they're not really omars.

01:21:33 They're just big black animals

01:21:35 with huge legs.

01:21:37 The story of their extinction is sad.

01:21:39 In 1920,

01:21:41 a cargo ship got stuck on Lord Howe Island,

01:21:43 and there were rats on board.

01:21:45 These rats fled the ship

01:21:47 and ran straight to the mainland.

01:21:49 Even though tree omars are bigger

01:21:53 than most insects,

01:21:55 they're still relatively small compared to rats.

01:21:57 The poor guys had no luck.

01:21:59 However, in 2004,

01:22:01 life resumed

01:22:03 for these distinctive creatures.

01:22:05 Two Australian scientists

01:22:07 were walking on the island,

01:22:09 and found 24 of them.

01:22:11 All of them lived under one bush.

01:22:13 Hey, if there's enough space

01:22:15 for everyone,

01:22:17 it's not small, it's sweet.

01:22:19 Conclusion?

01:22:21 It's better to be different than extinct,

01:22:23 isn't it?

01:22:25 The mere sight of its wing

01:22:27 almost breaks our hearts.

01:22:29 That's why you feel so nervous

01:22:31 about going for a swim.

01:22:33 This giant knife-shaped

01:22:35 toothed hunter is well known.

01:22:37 It's the Great White Shark.

01:22:39 What if this ultimate terror of the oceans

01:22:41 had to fold its baggage?

01:22:43 It should be for a good reason.

01:22:45 But who could be afraid of the teeth of the sea?

01:22:47 A giant Lovecraftian monster

01:22:49 that would even make the Megalodon

01:22:51 pass for a fruity menu?

01:22:53 Not at all.

01:22:55 Nothing cleans the oceans as efficiently as orcas.

01:22:57 When a group of them

01:22:59 is looking for food,

01:23:01 like otters or squids,

01:23:03 even the biggest and scariest sharks

01:23:05 leave the area without even turning around.

01:23:07 We don't know if they're specifically

01:23:09 after the Great White Sharks

01:23:11 or if they're just preventing

01:23:13 the competition from entering the area.

01:23:15 But experts say that sharks flee

01:23:17 from them and sometimes don't return

01:23:19 until the next year.

01:23:21 They're the Great White Sharks

01:23:23 and they have many teeth

01:23:25 that they can use to satisfy their voracious appetite.

01:23:27 Orcas are also very smart

01:23:29 and work as a team to get what they want.

01:23:31 Whether it's catching a fishing rod,

01:23:33 keeping seals away from ice,

01:23:35 or even hunting whales.

01:23:37 So,

01:23:39 even if the Great White Shark

01:23:41 is afraid of the powerful orca,

01:23:43 should we do the same?

01:23:45 Personally, I keep my distance

01:23:47 from any wild animal.

01:23:49 But don't worry,

01:23:51 orcas are very difficult to feed

01:23:53 and humans are not on their menu.

01:23:55 So it's unlikely

01:23:57 that they'll change their diet

01:23:59 just because you're in the parishes.

01:24:01 Orcas are not whales.

01:24:03 Technically, they're the biggest

01:24:05 species of dolphins.

01:24:07 And sharks are as afraid of their cousins,

01:24:09 the Great Dolphins.

01:24:11 Only one of them is stronger than a shark,

01:24:13 so imagine when they're in a group!

01:24:15 Sharks are easily outmatched

01:24:17 by sea lions,

01:24:19 who use their long muzzle as a belly.

01:24:21 This bothers the shark so much

01:24:23 that it simply prefers to leave the area.

01:24:25 Now, if we think of other great hunters

01:24:27 of the animal kingdom,

01:24:29 wolves always come to mind.

01:24:31 A pack can take over a vast territory

01:24:33 and as they are at the top of the food chain,

01:24:35 they can choose everything

01:24:37 they like from a vast menu.

01:24:39 Wolves are smart, fast and agile,

01:24:41 but their biggest advantage is probably their number.

01:24:43 If grizzlies or pumas

01:24:45 manage to take the top spot

01:24:47 against just one of them,

01:24:49 the number is always in the favor of wolves.

01:24:51 The hunter becomes the hunted.

01:24:53 And even alone, the wolf remains terrifying.

01:24:55 It's too difficult for another animal

01:24:57 to take on a lone wolf,

01:24:59 so they're usually left alone.

01:25:01 Imagine now being able to track

01:25:03 a boar by temperatures

01:25:05 below zero,

01:25:07 dressed in orange in a completely snowy environment.

01:25:09 The Siberian tiger

01:25:11 excels in this domain.

01:25:13 It's over three meters long

01:25:15 and weighs up to 180 kilos.

01:25:17 It's the biggest of all wild cats.

01:25:19 This feline could easily jump over you

01:25:21 while carrying twice its own weight.

01:25:23 The only animal

01:25:25 that can really challenge it

01:25:27 would be a fairly large brown bear

01:25:29 and that would be a real challenge.

01:25:31 No wonder the Siberian tiger

01:25:33 is at the top of the food chain

01:25:35 where it lives.

01:25:37 As for the big boss in South America,

01:25:39 it would be the green anaconda.

01:25:41 They're not at ease

01:25:43 facing the world's biggest snake.

01:25:45 The waters are in trouble

01:25:47 and their shelter perfectly hides

01:25:49 this giant snake

01:25:51 that passes by totally unnoticed.

01:25:53 They lie there waiting

01:25:55 for a victim to come a little too close.

01:25:57 And bam! It strikes!

01:25:59 It uses its curved and thin teeth

01:26:01 and its 4.5 meters of muscles

01:26:03 to keep its meal in place.

01:26:05 Fortunately for most other animals,

01:26:07 after swallowing its meal,

01:26:09 it's easy to digest.

01:26:11 But the world's biggest snake

01:26:13 isn't the most dangerous.

01:26:15 This title belongs to the black mamba.

01:26:17 Lions, hyenas, giraffes

01:26:19 and even elephants

01:26:21 avoid it at all costs.

01:26:23 They all know that a bite

01:26:25 will tear them apart.

01:26:27 Being able to reach 4 meters long,

01:26:29 it's the second longest venomous snake

01:26:31 in the world, according to the Royal Cobra.

01:26:33 The African black mamba

01:26:35 is the fastest snake in the world.

01:26:37 It has the highest speed of most

01:26:39 of the rolling mats.

01:26:41 This neighbor of the anaconda

01:26:43 may not be the boss,

01:26:45 but it deserves to be mentioned.

01:26:47 The electric eel.

01:26:49 Very few animals are ready

01:26:51 to face a creature as heavy as it.

01:26:53 It has about 6,000 special cells

01:26:55 that can produce up to 800 volts of electricity.

01:26:57 It's 3 to 6 times stronger

01:26:59 than a wall outlet.

01:27:01 It's enough to knock down a horse

01:27:03 or light a Christmas tree.

01:27:05 It's the same with the electric girland

01:27:07 in its pool in Anguilla.

01:27:09 Every time the eel launches a discharge,

01:27:11 the bulbs light up.

01:27:13 It's said that the electric eel

01:27:15 can give a double discharge

01:27:17 thanks to a so-called revolting power.

01:27:19 No, it's a word game.

01:27:21 On the other hand, the electric eel

01:27:23 needs to breathe air by going up to the surface

01:27:25 every 10 minutes to fill its mouth with air.

01:27:27 Yes, its only lung is in its mouth.

01:27:29 And what about the king of the jungle?

01:27:31 He wears this title just in books

01:27:33 and in movies.

01:27:35 Because to begin with, he lives in the African plains

01:27:37 and not in the forest.

01:27:39 And a whole series of predators

01:27:41 like hyenas, leopards and crocodiles

01:27:43 try to grab his crown.

01:27:45 Even zebras and giraffes

01:27:47 can stop this big feline

01:27:49 from a well-placed sabre shot.

01:27:51 If we stick to the only bite force,

01:27:53 the crocodile of the Nile

01:27:55 has the largest ever measured.

01:27:57 Its jaws are five times more powerful

01:27:59 than that of a lion.

01:28:01 If it were a lion,

01:28:03 it would be enough to avoid bathing.

01:28:05 But good luck to avoid a lion.

01:28:07 They can run at 80 km/h,

01:28:09 jump the length of a bus

01:28:11 and even climb trees.

01:28:13 But the main competitor of the lion

01:28:15 to the title of king is the lycaon.

01:28:17 These two species often fight

01:28:19 because they hunt the same food

01:28:21 in the same area.

01:28:23 Faced with a group of lions,

01:28:25 lycaons have no choice but to flee.

01:28:27 But they have an advantage over felines,

01:28:29 lions can reach incredible speed

01:28:31 but only over a short distance.

01:28:33 It takes too much energy

01:28:35 to move its 180 kg of muscles

01:28:37 over long distances.

01:28:39 On the other hand,

01:28:41 the lycaon has long legs and very large lungs.

01:28:43 This means they can run fast

01:28:45 and keep a cadence of kilometers.

01:28:47 This is how they hunt,

01:28:49 by tiring their lunch.

01:28:51 There is still a fairly brave animal

01:28:53 to face the king

01:28:55 if it is too curious, the hippopotamus.

01:28:57 They may seem nice and harmless,

01:28:59 hippos are among the most dangerous

01:29:01 animals on the planet.

01:29:03 According to statistics,

01:29:05 they are more victims than the great white sharks.

01:29:07 And they are not the patapouf

01:29:09 we imagine.

01:29:11 They are all in muscle and weigh as much as a car.

01:29:13 Their pointed canines can be longer

01:29:15 than your forearm and they are not afraid of anything.

01:29:17 Even lions and crocodiles

01:29:19 prefer to keep their distance.

01:29:21 Their name means "horseback"

01:29:23 and they spend up to 16 hours a day in immersion.

01:29:25 But the funniest thing is

01:29:27 that hippos can't really swim.

01:29:29 If you think you see a swimmer,

01:29:31 he is actually walking on the bottom.

01:29:33 They can still beat the speed

01:29:35 of the best Olympic swimmers,

01:29:37 so be careful!

01:29:39 And yes, be careful, the lion!

01:29:41 Hippos may be the real kings of Africa.

01:29:43 But I will not approach them

01:29:45 to give them the crown.

01:29:47 As for the sovereign of the forests, it is the grizzly.

01:29:49 Weighing more than half a ton,

01:29:51 one would be wrong to believe

01:29:53 that the hair-eating hippos are slow and clumsy.

01:29:55 The grizzly can run at 40 km/h

01:29:57 over long distances

01:29:59 and climb, descend and on all terrains.

01:30:01 It is the 4x4 of the animal world.

01:30:03 Having no natural predator,

01:30:05 the grizzly is at the top of the food chain.

01:30:07 Fortunately, it sleeps a third of the year.

01:30:09 I just hope for you

01:30:11 that you will never fall on one of them,

01:30:13 especially before they go into hibernation.

01:30:15 These bears spend the fall months

01:30:17 to fatten up to hold the winter,

01:30:19 so they are even more hungry than usual.

01:30:21 Being the largest bird of prey

01:30:23 in North America,

01:30:25 the grizzly is found everywhere

01:30:27 in North America,

01:30:29 both in forests and in the mountains.

01:30:31 It is almost 2 meters in width

01:30:33 and we are not talking about eagle vision for nothing.

01:30:35 These birds can spot a rabbit

01:30:37 5 km from the air.

01:30:39 It's like seeing an ant

01:30:41 from the top of a 10-story building.

01:30:43 The grizzly can also dive

01:30:45 quickly from a very high height.

01:30:47 During its stings,

01:30:49 it can reach speeds

01:30:51 of over 320 km/h,

01:30:53 as fast as a flying arrow.

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